Gosam (Sophora flavescens): K-beauty ingredient guide 고삼
⏱ 1 min read
⚡ Quick answer: 고삼 (gosam) is the bitter root that Korean brands reach for in scalp tonics and blemish toners. Laboratory work on its alkaloids is interesting; controlled evidence on human skin is close to absent. Acne that is not shifting is a dermatologist's problem, not a botanical toner's — see one rather than waiting on a root extract.
고삼 (gosam) is the bitter root that Korean brands reach for in scalp tonics and blemish toners. Laboratory work on its alkaloids is interesting; controlled evidence on human skin is close to absent. Acne that is not shifting is a dermatologist's problem, not a botanical toner's — see one rather than waiting on a root extract.
What Gosam (Sophora flavescens) does for your skin
- Bitter hanbang root used in blemish-focused Korean formulas
- Contributes matrine and related plant alkaloids
Best for
🌌 Gosam (Sophora flavescens) compatibility map
Tap any ingredient to open its guide. ━ pairs well · ┈ use with care.
🤰 Pregnancy: Ask your doctor before use during pregnancy. · ⏰ Use: BOTH
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✍️ Written & reviewed by the KoreaPlus Editorial team — dermatologist-informed, cosmetic-science researched & source-cited. Last reviewed: 2026-08-23.
General educational information using cosmetic structure-function wording — not medical advice. Always patch-test new actives. © KoreaPlus.